Abstract:
A method to select cylinder and valve operational modes in an internal combustion engine with valves that may be deactivated. A simplified method to select cylinder and valve modes is presented.
Abstract:
A method to reduce chassis vibration in an engine with valves that may be deactivated. Valves are controlled to avoid exciting modal frequencies of mechanical components and systems.
Abstract:
A system to control valves of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce hydrocarbon emissions of an internal combustion engine. Further, the system may contain both mechanical and electromechanical valves to reduce cost and increase performance.
Abstract:
A method for controlling at least valve to operate in at least a cylinder of an internal combustion engine coupled to a manifold, the method comprising of deactivating said valve in response to an operating condition of a vehicle electrical system, wherein during at least a first condition of the vehicle electrical system said valve is deactivated in a first position that allows at least some airflow between the cylinder and the manifold.
Abstract:
A system and method to control engine valve operation during periods of cylinder deactivation of an internal combustion engine. Electromechanical valves are controlled in a manner to reduce fuel consumption and emissions during cylinder deactivation periods of an internal combustion engine.
Abstract:
A method to select cylinder and valve operational modes in an internal combustion engine with valves that may be deactivated. A simplified method to select cylinder and valve modes is presented.
Abstract:
A method to select cylinder and valve operational modes in an internal combustion engine with valves that may be deactivated. A simplified method to select cylinder and valve modes is presented.
Abstract:
A system and method to control engine valve timing of an internal combustion engine. Electromechanical valves are controlled to improve engine fuel economy. Further, the method can adjust valve operation to provide air-fuel charge motion and increase combustion stability.
Abstract:
A method to control valves that may be deactivated during multi-stroke cylinder operation. Valves are controlled to improve drivability and reduce valve degradation.